95907

Clinical Indications

• Localized numbness, tingling, or weakness in a specific limb or nerve distribution (e.g., suspected early carpal tunnel syndrome, ulnar nerve compression)
• Initial evaluation of focal mononeuropathy or nerve entrapment
• Assessment of nerve injury following trauma when limited nerve involvement is suspected
• Differentiating between nerve root compression and peripheral nerve pathology when a few targeted studies are sufficient
• Confirmation of nerve integrity after localized injury or surgery

Procedure Steps

1. Patient preparation: Explaining the procedure, ensuring patient comfort, and cleaning the skin over the target nerve pathways.
2. Electrode placement: Placing surface stimulating electrodes over the course of the nerve and recording electrodes over the muscle (for motor studies) or sensory distribution (for sensory studies).
3. Nerve stimulation: Delivering controlled, brief electrical impulses to the nerve at one or more points along its path.
4. Signal recording: Capturing and amplifying the evoked electrical potentials (e.g., Compound Muscle Action Potential (CMAP), Sensory Nerve Action Potential (SNAP), F-wave, H-reflex) from the recording electrodes.
5. Measurement of parameters: Accurately measuring the latency (time taken for the signal to travel), amplitude (strength of the signal), and conduction velocity (speed of the signal) for each study.
6. Limited study performance: Conducting a maximum of two distinct nerve conduction studies, selecting the most appropriate nerves and modalities (motor, sensory, F-wave, H-reflex) based on clinical presentation.
7. Interpretation: Analyzing the collected data, comparing it to normative values, and generating a report outlining the findings and their clinical significance.

Coding Guidelines

• CPT code 95907 is used when 1 or 2 distinct nerve conduction studies are performed, irrespective of the modality (motor, sensory, F-wave, H-reflex).
• Each unique nerve studied, for a specific modality, counts as one study. For example, a right median motor study is one study; a right median sensory study is a second study. An F-wave study of the right median nerve is a third study.
• Bilateral studies on the same nerve (e.g., right median motor and left median motor) are counted as two separate studies.
• This code includes both the technical component (performing the test) and the professional component (interpreting the results).
• Documentation must clearly identify each nerve studied, the specific modality performed, and all measured parameters and findings.
• Do not report 95907 in conjunction with 95885 or 95886 if the nerve conduction studies and electromyography (EMG) are performed on the same extremity, unless specific clinical circumstances are clearly documented to support separate medical necessity.

Associated ICD-10 Codes

• G56.01 - Carpal tunnel syndrome, right upper limb
• G56.02 - Carpal tunnel syndrome, left upper limb
• G56.21 - Lesion of ulnar nerve, right upper limb
• G56.22 - Lesion of ulnar nerve, left upper limb
• R20.2 - Paresthesia
• R29.898 - Other symptoms and signs involving the nervous system
• G57.31 - Lesion of sciatic nerve, right lower limb